MV-32/64 Multiviewer
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Introduction
Issue 1 Rev 11
Page 10
© 2014 Snell Limited
A scaler on each video card processes one of the possible input sources and scales it to the
desired tile size for the selected position on the display output. A mixer on each video card
combines all the video tiles and sends the resulting image to the next video card. The final
display output comprises all of the tiles in a single picture.
2.1.1 Video Input Card types
Possible video inputs are shown below. For details of card and Multiviewer firmware
compatibility see Table 1. on page 11.
•
Card Type MV-VIP3
- Composite (limited to 2 inputs per card, inputs 1 and 2),
SD-SDI, HD-SDI 3 Gb/s (Level A) & 1.5 Gb/s (up to 4 inputs per card)
•
Card Type MV-VIP3D
- Composite (limited to 2 inputs per card, inputs 1 and 2),
SD-SDI, HD-SDI 3 Gb/s (Level A) & 1.5 Gb/s, including Dolby E level metering (up to
4 inputs per card)
•
Card Type MV-VIP1
- (no longer supplied) - Composite, S-video, RGB, YUV, SD-SDI,
DVI-I
•
Card Type MV-VIP2
- (no longer supplied) - Composite, S-video, RGB, YUV, SD-SDI,
HD-SDI 3 Gb/s (Level A) & 1.5 Gb/s, DVI-I
Overlay of audio and graphics information is performed inside each scaler, which receives
control data from the main CPU in real-time for external audio sources, or from the video card
itself in the case of embedded SDI/HD-SDI audio.
To allow arbitrary layering of sources, each input board has information about all of the tile
positions, allowing each tile to be displayed as required and enabling picture overlay with
complex borders.
Fig 1.
The MV-32/MV-64 System Concept.
Note:
•
The MV-VIP1 and MV-VIP2 cards were supplied with earlier multiviewers and are
shown in this manual for users that already have them fitted.
•
The MV-VIP3 and MV-VIP3D cards cannot be mixed with MV-VIP1 or MV-VIP2
cards in the multiviewer frame because they use different versions of firmware.
If MV-VIP3 or 3D cards are to be fitted in a multiviewer frame that contains
MV-VIP1 or MV-VIP2 cards they must first be removed and replaced with MV-VIP3
or 3D cards.
